27488

Zitronensäure

puriss. p.a., ACS reagent, anhydrous, ≥99.5% (T)

• Lineare Formel: HOC(COOH)(CH₂COOH)₂
• CAS-Nummer: 77-92-9
• Molekulargewicht: 192.12
• EC Number: 201-069-1
• UNSPSC Code: 12352100
• PubChem Substance ID: 24856613
• Beilstein/REAXYS Number: 782061
• MDL number: MFCD00011669

Eigenschaften

• grade: ACS reagent, puriss. p.a.
• assay: ≥99.5% (T)
• expl. lim.: 8 %, 65 °F
• ign. residue: ≤0.02% (as SO₄)
• loss: ≤0.5% loss on drying, 110 °C
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• mp: 153-159 °C (lit.)
• anion traces: chloride (Cl^-): ≤5 mg/kg, oxalate (C₂O₄^2-): ≤500 mg/kg, phosphate (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤20 mg/kg
• cation traces: Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤3 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤2 mg/kg, Zn: ≤5 mg/kg
• SMILES string: OC(=O)CC(O)(CC(O)=O)C(O)=O
• InChI: 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
• InChI key: KRKNYBCHXYNGOX-UHFFFAOYSA-N
• Gene Information: human ... SRC(6714)

Beschreibung

Other Notes

This product has been replaced by 27109-Sigma-Aldrich | Citric acid meets analytical specification of Ph. Eur., BP, USP, E330, anhydrous, 99.5-100.5% (based on anhydrous substance)

Sicherheitshinweise

• pictograms: GHS07
• signalword: Warning
• hcodes: H319,H335
• pcodes: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Lagerklasse: 11 - Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves